/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.gravitee.am.management.handlers.management.api.authentication.handler;

import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public class CustomLogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {

    private static final String LOGOUT_URL_PARAMETER = "target_url";

    @Override
    protected String determineTargetUrl(HttpServletRequest request, HttpServletResponse response) {
        String logoutRedirectUrl = request.getParameter(LOGOUT_URL_PARAMETER);
        if (logoutRedirectUrl != null && !logoutRedirectUrl.isEmpty()) {
            setTargetUrlParameter(LOGOUT_URL_PARAMETER);
        }
        return super.determineTargetUrl(request, response);
    }
}
